src/model/Order.java

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package model;

import utils.PriceUtil;

import java.util.*;

public class Order {
    private int id;
    private float total;//总价
    private int amount;// 商品总数
    private int status;//1未付款/2已付款/3已发货/4已完成
    private int paytype;//1微信/2支付宝/3货到付款
    private String name;
    private String phone;
    private String address;
    private Date datetime;
    private User user;
    private Map<Integer,OrderItem> itemMap = new HashMap<Integer,OrderItem>();
    private List<OrderItem> itemList = new ArrayList<OrderItem>();

    public void setUsername(String username) {
        user = new User();
        user.setUsername(username);
    }
    public void addGoods(Goods g) {
        if(itemMap.containsKey(g.getId())) {
            OrderItem item = itemMap.get(g.getId());
            item.setAmount(item.getAmount()+1);
        }else {
            OrderItem item = new OrderItem(g.getPrice(),1,g,this);
            itemMap.put(g.getId(), item);
        }
        amount++;
        total = PriceUtil.add(total, g.getPrice());
    }

    public List<OrderItem> getItemList() {
        return itemList;
    }

    public void setItemList(List<OrderItem> itemList) {
        this.itemList = itemList;
    }

    public void lessen(int goodsid) {
        if(itemMap.containsKey(goodsid)) {
            OrderItem item = itemMap.get(goodsid);
            item.setAmount(item.getAmount()-1);
            amount--;
            total = PriceUtil.subtract(total, item.getPrice());
            if(item.getAmount()<=0) {
                itemMap.remove(goodsid);
            }
        }
    }
    public void delete(int goodsid)
    {
        if(itemMap.containsKey(goodsid)) {
            OrderItem item = itemMap.get(goodsid);
            total = PriceUtil.subtract(total, item.getAmount()*item.getPrice());